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Debt (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Jul. 09, 2021
USD ($)
Apr. 19, 2021
USD ($)
Apr. 16, 2020
USD ($)
Oct. 30, 2021
USD ($)
Oct. 31, 2020
USD ($)
Oct. 30, 2021
USD ($)
Oct. 31, 2020
USD ($)
day
Jan. 30, 2021
USD ($)
day
Oct. 31, 2018
USD ($)
Line of Credit Facility [Line Items]                  
Repayments under credit facilities           $ 0 $ 117,535,000    
Proceeds under credit facilities           0 117,535,000    
Average outstanding amount         $ 0   $ 43,300,000 $ 43,300,000  
Number of days where borrowings incurred against facilities | day             97 97  
Maximum amount outstanding during period             $ 50,000,000 $ 50,000,000  
Interest rate during period             3.45% 3.45%  
2021 Credit Facility                  
Line of Credit Facility [Line Items]                  
Average outstanding amount       $ 0   0      
Maximum amount outstanding during period       0   0      
2021 Credit Facility | Unsecured Debt                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity $ 100,000,000                
Advance limitation, percentage 55.00%                
Leverage ratio 3.5                
Fixed coverage charge 1.2                
2021 Credit Facility | Unsecured Debt | Minimum                  
Line of Credit Facility [Line Items]                  
Annual commitment fee 15                
2021 Credit Facility | Unsecured Debt | Maximum                  
Line of Credit Facility [Line Items]                  
Annual commitment fee 20                
2021 Credit Facility | London Interbank Offered Rate (LIBOR) | Unsecured Debt | Minimum                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 1.00%                
2021 Credit Facility | London Interbank Offered Rate (LIBOR) | Unsecured Debt | Maximum                  
Line of Credit Facility [Line Items]                  
Basis spread on variable rate 1.80%                
Bank of America LOC                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity                 $ 50,000,000
Amended Credit Facility                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity     $ 75,000,000            
Proceeds under credit facilities     $ 50,000,000            
Amended Credit Facility | 2021 Credit Facility                  
Line of Credit Facility [Line Items]                  
Maximum borrowing capacity       $ 100,000,000   $ 100,000,000      
Bank of America and Regions LOCs                  
Line of Credit Facility [Line Items]                  
Repayments under credit facilities   $ 50,000,000